HHH-6043 PostLoad method invoked before collection initialised

hibernate-entitymanager/src/test/java/org/hibernate/jpa/test/collection/Child.java

@@ -0,0 +1,35 @@
+package org.hibernate.jpa.test.collection;
+
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.ManyToOne;
+
+@Entity
+public class Child {
+
+    private Integer id;
+    private Parent daddy;
+    
+    public Child() {
+        
+    }
+    
+    @Id
+    public Integer getId() {
+        return id;
+    }
+    public void setId(Integer id) {
+        this.id = id;
+    }
+    @ManyToOne
+    public Parent getDaddy() {
+        return daddy;
+    }
+    public void setDaddy(Parent daddy) {
+        this.daddy = daddy;
+    }
+    
+    
+}
+
+

hibernate-entitymanager/src/test/java/org/hibernate/jpa/test/collection/Parent.java

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+package org.hibernate.jpa.test.collection;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import javax.persistence.CascadeType;
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.Id;
+import javax.persistence.OneToMany;
+import javax.persistence.PostLoad;
+import javax.persistence.Transient;
+
+@Entity
+public class Parent {
+
+    private Integer id;
+    private Set<Child> children = new HashSet<Child>();
+    private int nrOfChildren;
+    
+    public Parent() {
+        
+    }
+    
+    @Id
+    public Integer getId() {
+        return id;
+    }
+    public void setId(Integer id) {
+        this.id = id;
+    }
+    @OneToMany(mappedBy="daddy", fetch=FetchType.EAGER, cascade=CascadeType.ALL)
+    public Set<Child> getChildren() {
+        return children;
+    }
+    public void setChildren(Set<Child> children) {
+        this.children = children;
+        //children.size();  // This will result in the same exception as the PostLoad method...
+    }
+    
+    @PostLoad
+    public void postLoad() {
+       nrOfChildren = children.size();
+    }
+    
+    @Transient
+    public int getNrOfChildren() {
+        return nrOfChildren;
+    }
+}
+

hibernate-entitymanager/src/test/java/org/hibernate/jpa/test/collection/PostLoadTest.java

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+package org.hibernate.jpa.test.collection;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import javax.persistence.EntityManager;
+
+import org.hibernate.jpa.test.BaseEntityManagerFunctionalTestCase;
+import org.hibernate.testing.FailureExpected;
+import org.hibernate.testing.TestForIssue;
+import org.junit.Test;
+
+@TestForIssue( jiraKey="HHH-6043" )
+public class PostLoadTest extends BaseEntityManagerFunctionalTestCase {
+
+    /**
+     * Load an entity with a collection of associated entities, that uses a @PostLoad method to
+     * access the association.
+     */
+	@Test
+	@FailureExpected( jiraKey="HHH-6043" )
+    public void testAccessAssociatedSetInPostLoad() {
+    	Child child = new Child();
+        child.setId(1);
+        Parent daddy = new Parent();
+        daddy.setId(1);
+        child.setDaddy(daddy);
+        Set<Child> children = new HashSet<Child>();
+        children.add(child);
+        daddy.setChildren(children);
+
+        EntityManager em = getOrCreateEntityManager();
+
+        em.getTransaction().begin();
+        em.persist(daddy);
+        em.getTransaction().commit();
+        em.clear();
+
+        daddy = em.find(Parent.class, 1);
+        assertEquals(1, daddy.getNrOfChildren());
+    }
+	
+	@Override
+	protected Class<?>[] getAnnotatedClasses() {
+		return new Class[] { Child.class, Parent.class };
+	}
+}
+
+